How to Create a Bridge Connection Between PC and VM

Verify that the necessary packages are installed. For Ubuntu, you will need the bridge-utils package.

• Identify the physical network interface of the PC using the following command and note down the name of the physical interface (e.g., eth0, enp1s0, etc.):

• Open the network configuration file using a text editor at “/etc/netplan/” (Ubuntu)
• Create a new configuration file (e.g., bridge.yaml) or modify an existing one and paste the following configuration:

network:
  version: 2
  renderer: networkd
  ethernets:
    pc_interface_name: #replace pc_interface_name with the network interface you noted before
      dhcp4: no
      dhcp6: no
bridges:
  br0:
    interfaces: [pc_interface_name]
    addresses: [192.168.1.128/24] //You can choose a different address if you want
    gateway4: 192.168.1.1
    nameservers:
      addresses: [8.8.8.8]

This only works with wired network. You have to replace networkd with NetworkManager to have your internet access through wifi back

• Apply the network configuration:

• This will create the bridge interface (br0) and associate it with the physical interface you can check that using:

• If not you can restart your network:

• Or:

• Make sure the vm is shut off before applying any changes , check using the following command:

• Modify the XML configuration file of the VM to use the bridge interface (br0) instead of a virtual network you can do that usig the following commands or manually which i'll be mentioning it afterwards:
  • Determine the name of the VM's network interface: Run the following command on the host machine to list the available network interfaces of the VM:

• Connect the VM to the bridge interface:

• Locate the XML configuration file of the VM (e.g., /etc/libvirt/qemu/<vm_name>.xml)and open it with a text editor of your choice
• Locate the tag <interface> and add the follwing after the closing tag of interface </interface>:

  <interface type='bridge'>
      <mac address='52:54:00:09:39:b6'/>
      <source bridge='br0'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x08' slot='0x00' function='0x0'/>
  </interface>

• Save the changes and exit

• Launch the VM using:

• On the VM Terminal check the network interfaces names using :

• You will notice that there is an additional interface named (e.g: enp9s0) if it's DOWN use this command to set it UP:

• Replace enp9s0 according to your interface name
• Add an ip address of your choice:

• Replace enp9s0 according to your interface name
• Check if it's running using :

• Verify connectivity by accessing the VM from the PC:

• Or:

• Change the address according to your configuration